Harrow.



A. A. & W. NELSON.

HARROW. APPUCATION HLED lUNE 12. 1914.

1,148,790. Patented Aug. 3, 1915.

101 in; ass j; 11 I 2 0/1;

/ fl.%W Lm v M BJMY% COLUMBIA FLANOGRAPN COUWASHINOTON, n. c.

mean seams smear crates- ALFRED A. NELSON nun WALTER NELSON, or n rrniv rro, :IowA.

HARRQW.

inasgzeo.

To al l w lzom it mag concern: j

Be it "known that we, ALFRnD A. NELsoN and WALTER 'NnLsoN, citizens'of the United States, and residents of Atlantic, in the county of 'Cass andfitate of Iowa, have invented certain new and useful Harrow, of whichfthe following isa specification.

The obj'ect of our inventi'on isto provide a harrow composed of a plurality" of sec- .tions, and of comparativelysimple, durable and inexpensive construction, including a draw bar so built and. arranged that the outer harrow sectionsumay 'be tilted up wardly and toward "each other for reducing the total length of "the harrow' for drawing it :through gates, over-narrow roads andthe -like.

sail a further bbje ct'ist'o mide match a harrowsimple and effective means for {tilting the bars which carry .the teeth/for "varying the angle of "the teeth with relation to'the ground, saidmeansbeing arranged to permit'thetilting of the harrowsand to be out of theiway of the tongue which draws the cart.

Our invention consists in certain details, in the construction, combination and arrangementjof the various parts of the device, whereby the obj ect's' contemplated are attained, as; hereinafter'moreifully' set 'forth, pointed out in -'our claims, and illustrated in the accompanying drawings,'in which:

Figure lshows a top tr .planview ofja harrow, embodyingour IIIVGHHOII, and having four sections Fig. 2 shows a detail,

sectional view, taken on 'th e fline 2-2 of 'Fig. 1. Fig. 3 shows a detail, sectional view, taken on the line 55 of Fig.1. Fig. 4

shows a rear elevation of a" three section harrow, embodying our invention, show ng theouts1desect1onsm 't'helr raised or folded positions. Fig. '5 shows a'detail, sectional view,'taken onthe line 55 of'Fig. 1. "Fig.

.6 shows a detail, sectional view,"tak 11 on the line 6+6of'Fig; 5. Fig. -7 shows adeta-il, sectional view, taken on the line f7,7 of Fig. 5. V j

In the accompanying drawings, wehave used the reference numeral 10fto indicate generally'the central member offlour improved folding'draw-bar which hasfthe folding or collapsiblemembersfll.

Where several harrow sections are'used,

jointed rods 21 are secured to thejmembers' I of the draw bar and are extendedfforwardly on converging lines andpivoted tothe ring Specification of Letters Patent.

Patented-Aug. 13., 1-915.

Applicationfiled June 1-2, 1914. Serial Nol"844,808.

22% In four section harrows .two sets of saidjoin'ted rods are employed, as shown in Each section of .the harrow comprises an :outer frame having the forward transverse member 22 and the side members 23' and 24:. The frame is composed of an 7 outwardly opening channel "bar. Mounted between the side .members 23 and 24 ofeach section are a' plurality of cross bars 25,1preferably made ofpipe. "The menibers25 aresecured'to the side fframe members .in the following way: A headed bolt 26 is extended through the side members fromfthe outer'surface thereof, as

Mountfed inthe transverse frame members cross members 25Qand there by tilting the teeth 29 .to any desiredjangle, some means other lthan the' le'vers commonly used are necessary in'ou'rfharrow forthe reason that "the ordinary levers would be in the way when the outer'sections are tilted upwardly.

"For rotating'themember 25 and tiltingthe 'harro'w teeth, the following means have *therefore'fbeen provided. Secured to each member'25 a is an upwardly extending arm 30. Thearmsg30 are arranged in a series on each harrow section (in aline parallel with the fore' a n'd aft longitudinal axis of the "25 are .a plurality of downwardly extending "harr'owteeth 29; v 'F or rotating "the various section. Pivotedto theupper ends of the -members13'0 ofeach section is a bar 31, whereby "the rotary movement of any one member 25' is imparted to all the other-mem- Ibers 25 of each harrow section. 'Mounted on two adjacentmembers 25 of each section isapajirof parallel plates 32, in which the vmembers 25fmay rotate Secured to jeach ofthe members 32 of each pair and extendingznpwardlytherefrom is a'bracket arm; 33.

"Pivotally mounted'in'the upper ends of the arms is a cross member '3 l,'the central portionof which'forms ahal'f of the hearing 35.v Secured to the member 3lbetween the upright members33 by means of bolts 36, is a bearing member-37. 'Rotatably but non-slidably mounted in the bearing meal-T bers and 37 is a rod 38,'having on one end a crank handle 39. Mounted on one of the members 25, near those on which the members 32 are mounted, is a pair of upwardly extending, parallel arms 40. Rotatably mounted in the upper ends of .the arms is a block 41, having a screw-threaded opening in which is received one end of the rod 38 which is also screw-threaded. It will be seen that by rotating the rod 38, the upright members 40 may be tilted in either d1 rection, and on account of the members 30 and 31, all of the members 25 Will be tilted one way or the other for determining the position of the teeth 29.

The advantage of the tilting'device 1 shown is found partially in its compactness and in its arrangement whereby it will not 20 interfere with the folding of the-upper harrow sections upwardly and inwardly to their positions, as shown in Fig.4. The harrow sections are placed side by side in succession, as shown in Fig. 1, and are pivotally secured to the draw bar sections The central draw bar member 10 maybe made of such size that either one or two sections may be securedthereto. v

In the practical operation of our im-' proved harrow, the members are assembled in the positions heretofore described. By

rotatingthe rods 38 by means of the crank handles 39, the harrow teeth 29 may be tilted to any desired position. It will be seen thatthe rotation of the rod 38 draws the upper end ofthe members 40'rearwardly or moves them forwardly, as the case may be, thereby rotating the member 25 on which said membersACOare secured, and tilting the '40 teeth 29' in such member 25. All of the members 25 being connected together by means of themembers 30 and 31, it will be seen that the teeth may be set at any de- When it is. desired. to drive sired angle. the harrow in acomparatively narrow path,

as through agate or the like, the outer member 11 may be tilted upwardly and inwardly 7 and will carry with it the harrow section secured to it. The members .11 may be tilted upwardly on each side and may be rested against each other on their upper ends, and if desired, may be secured together by suitable'means. A hook 59 maybe securedto some of the members25 if desired to engage suitable devices 59 fon other members 25. The side edges of the outer harrow I sections'preferably rest on thefside edgesof the middle members,1as"shown in .4, 1 when the harrow is in its collapsed position.

vW'hen four sections are used, the two outer sections rest on top of the two inner sections when theharrow is collapsed.

The advantages -,of.a harrow of the type from the description of its operation. The

screw, threaded opening.

I v I rod is'receive'd. heretofore described are largely obvious f router ha rrow sections inay be'tilted upwardly and supported in their upwardly tilted positions, or placed uponthe inner sections, where four sections are used so that the harrow may be dragged through a gate or-over a comparatively narrow road? The collapsing, asjdescrlbed, would be impossible if the ordinary tilting levers were used, and r for these reasons a special means for tilting the teeth has been provided, as heretofore set forth.- The draw bar is made insections means.

-which are secured together ffsuitable It W111 be understood that some c anges may be made in the details of the construction of our harrow without departing from its essential features,.and it is our intent to cover by this application any such changes which may beincluded within'the scope of the following claims. f

,7 We claim as our invention:

1. In a device of the class member's' rotatably mounted on' said side members, teeth mounted insaid transverse I I V I d escribed,oa harrow section comprising a frame. havlng a front member, sidev members, transverse members, and means forv rotating said transverse members'forvarying the angle of said J teeth with relation to the ground, said'means comprising upright members secured to said,

transverse members, i a longitudinally arranged barp'ivoted'to the upper ends'of said upright members, a block mounted on two l of saidtransverse members and capable of 'rotating'with relation thereto-, a rod rotatably but nonslidably. mounted in said. block,

asecond block mounted on another of said transverse members, and capable of rotation having; a screw threaded opening, said rod having ascrew threaded end received in said @with. relation thereto,"said lastnamed block i 52.;In adevice of. the classldescribed, a harrow sect on, comprlslng a frameincluding side members, transverse fmembers rotatably mounted with relation to said side members, means. for operatively connecting said'transv'erse members together so that 1 the rotation of one transverse member causes the rotation ofall theother transverse members of said section, longitudinally arranged members mounted on tWo' adjacent, transverse mem bers, upright members mounted; on said longitudinal members,ablock pivotally mounted between said upright members, a rod rotatably but non-slidably mounted in the said block, having a: screw threaded end, uprightmembers on another of saidtransverse members, block; pivotally mounte'd between said last named upright members, having' a screw threaded opening I in'which'the screw threaded end of said 3. In a device of the class described, a i

harrow, comprising a frame including side iso members, transverse members rotatably mounted with relation to sa1d s1de members, means for operativelyconnectlng said trans verse members together so that the rotation of one transverse member causes the rotation of all the other transverse members of a said section, longitudinally arranged members mounted on two adjacent, transverse members, upright members mounted on said longitudinal members, a block pivotally mounted between said upright-members, a

rod rotatably but non-slidably mounted in said block, having a screw threaded end,

'ALFRED A. NELSON.

WALTER NELSON.

Witnesses:

RALPH J ECKL, G; H. FREEMAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

